公开(公告)号：US20210294227A1

公开(公告)日：2021-09-23

申请号：US16943389

申请日：2020-07-30

Applicant: FUJI XEROX Co., Ltd.

Inventor： Atsushi SUGAWARA ,  Yosuke TSURUMI ,  Yasuko TORII ,  Yoshimasa FUJIHARA ,  Moegi IGUCHI

IPC: G03G9/08 ,  G03G9/087 ,  G03G9/093 ,  G03G15/08

Abstract: An electrostatic image developing toner includes toner particles, an external additive A, and an external additive B. At least the external additive A is deposited on the surfaces of the toner particles. At least the external additive B is deposited on the external additive A. The external additive B includes an aggregate of two or more particles. The coverage of the toner particles with the external additive B is 3% by area or more with respect to the total surface area of the toner particles.

公开(公告)号：US20210088922A1

公开(公告)日：2021-03-25

申请号：US16841685

申请日：2020-04-07

Applicant: FUJI XEROX CO., LTD.

Inventor： Moegi IGUCHI ,  Yasuko TORII ,  Sakon TAKAHASHI

IPC: G03G9/093 ,  G03G9/08 ,  G03G9/097 ,  G03G15/08 ,  G03G21/18

Abstract: A toner for electrostatic image development includes: toner particles; Si-doped strontium titanate particles; and silica particles. The particle diameter D of at least one peak in a number-based particle size distribution of primary particles of the silica particles is larger than the number-based median diameter D50 of primary particles of the Si-doped strontium titanate particles.

公开(公告)号：US20210302855A1

公开(公告)日：2021-09-30

申请号：US16984741

申请日：2020-08-04

Applicant: FUJI XEROX Co., Ltd.

Inventor： Yasuko TORII ,  Yosuke TSURUMI ,  Atsushi SUGAWARA ,  Yoshimasa FUJIHARA ,  Moegi IGUCHI

IPC: G03G9/097 ,  G03G9/08 ,  G03G9/113 ,  G03G15/08 ,  G03G21/18

Abstract: An electrostatic image developing toner includes a toner particle, an external additive A, and an external additive B. At least the external additive A is present on the surface of the toner particles. At least the external additive B is present on the external additive A. The number of peaks of the external additive B on the external additive A is 5 or more and 100 or less per 30 μm peripheral length of the toner particle, the peaks having a height from the surface of the toner particle of 80 nm or more and 250 nm or less.